Computational fluid dynamics driven mass transfer model for the prediction of CO2 corrosion in pipelines

IF 4.8 Q2 ENERGY & FUELS
Udayraj Thorat, Michael Jones, Richard Woollam, Joshua Owen, Richard Barker, Harvey Thompson, Gregory de Boer
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引用次数: 0

Abstract

A novel, computational fluid dynamics (CFD) driven modelling methodology for predicting CO2 corrosion rates in pipelines is presented. CFD is used to provide accurate predictions of the viscous sublayer thickness and turbulent diffusivities, which are then used within a mass transfer model of aqueous CO2 corrosion. Comparisons with experimental measurements of corrosion rate in horizontal pipe flow and corresponding theoretical predictions, based on empirical correlations and previous CFD approaches, show the new approach is more accurate for flows in the range of pH 4 to 6. However, the key advantage of the new approach is its flexibility. Existing models are inaccurate and highly restrictive, having been derived for very simple cases, such as 1 D pipe flow. In contrast, the new methodology provides a firm, scientific foundation for predicting corrosion rates by determining conditions in the viscous sublayer in much more complex, and practically relevant, flow situations.

用于预测管道中二氧化碳腐蚀的计算流体力学传质模型
本文介绍了一种新颖的、由计算流体动力学(CFD)驱动的建模方法,用于预测管道中的二氧化碳腐蚀率。CFD 用于准确预测粘性亚层厚度和湍流扩散性,然后将其用于二氧化碳水腐蚀的传质模型中。与水平管道流中腐蚀速率的实验测量结果以及基于经验相关性和以前的 CFD 方法得出的相应理论预测结果进行比较后发现,新方法对于 pH 值在 4 到 6 之间的水流更为准确。现有模型是针对非常简单的情况(如 1 D 管道流动)得出的,因此不准确且限制性强。相比之下,新方法通过确定更复杂、更实际的流动情况下的粘性底层条件,为预测腐蚀率提供了坚实的科学基础。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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CiteScore
7.50
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